Question: TELL ME PHYSICAL CONSTANT WHOSE NAME HAS THE WORD WAVELENGTH IN IT.
Paraphrase: Let Me know PHYSICAL Steady WHOSE Title HAS THE WORD WAVELENGTH IN IT.
SPARQL (Wikidata): SELECT DISTINCT ?sbj ?sbj_label WHERE { ?sbj wdt:P31 wd:Q173227 . ?sbj rdfs:label ?sbj_label . FILTER(CONTAINS(lcase(?sbj_label), 'wavelength')) . FILTER (lang(?sbj_label) = 'en') } LIMIT 25 
Answer: Wien wavelength displacement law constant, Wien wavelength displacement law constant, electron Compton wavelength, electron Compton wavelength